Russia has reawakened 3 mystery satellites — and no one knows what they are for

Three Russian satellites that were sent into low orbit in 2013 are on the move again, and no one knows what they are for, The Daily Beast reports.

Having been idle for more than a year, one of the satellites went hundreds of meters off its orbit last month to within 1,200 meters of a piece of a Chinese weather satellite that China smashed in a 2007 anti-satellite rocket test.

The maneuver, which is pretty impressive for such a small spacecraft, is also rather close by orbital standards.

No one quite knows what the satellites are for, but some experts say they could be “technology-demonstrators” or even “precursors to orbital weapons,” according to The Daily Beast.

Code named Kosmos-2491, Kosmos-2499 and Kosmos-2504, the three satellites maneuvered several times in the last three years to within a few dozen feet of their old booster shells.

This means that they could be inspection satellites that can scan and match the orbit of other spacecraft, possibly even interact with it physically for repairs, modifications or to dismantle it.

It’s also possible that these satellites could be used for warfare. “You can probably equip them with lasers, maybe put some explosives on them,” Anatoly Zak, an independent expert on Russian spacecraft, told The Beast in 2015. “If [one] comes very close to some military satellite, it probably can do some harm.”